Peoblem with listView in android

I am trying to make a app using list view and database .But my app is getting error every time i want to compile it .My code are below :

MainActivity.java

public class MainActivity  extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    FixtureAdapter adapter;
    DatabaseClass db=new DatabaseClass(this);

   db.addFixture(new Fixture("Bangladesh","Australis","Melborne","22 feb 2014"));
  db.addFixture(new Fixture("India","Pakistan","Sydney","15 feb 2014"));


  ArrayList<Fixture> fx= db.getAllContacts();

  adapter = new FixtureAdapter(this,
          fx);

          ListView dataList = (ListView) findViewById(R.id.list);
         dataList.setAdapter(adapter);


    }
}

adapter calss:

public class FixtureAdapter extends ArrayAdapter<Fixture> {
Activity context;
int layoutResourceId;
ArrayList<Fixture> data=new ArrayList<Fixture>();
/*public FixtureAdapter(Context context , int layoutResourceId, ArrayList<Fixture> data) {
super(context, layoutResourceId, data);
this.layoutResourceId = layoutResourceId;
this.context = (Activity)context;
this.data = data;
}*/

public FixtureAdapter(Context context , ArrayList<Fixture> data) {
    super(context, R.layout.fixture, data);

    this.context = (Activity)context;
    this.data = data;
    }

@Override
public View getView(int position, View convertView, ViewGroup parent) {

    View row = null;

    if(convertView == null)
    {
    LayoutInflater inflater = (LayoutInflater)context.getLayoutInflater();
    row = inflater.inflate( R.layout.fixture,null);
      TextView teamone=(TextView)row.findViewById(R.id.teamOneName);
      TextView teamtwo=(TextView)row.findViewById(R.id.teamTwoName);
      TextView vs=(TextView)row.findViewById(R.id.vs);
      TextView venue=(TextView)row.findViewById(R.id.venue);
      TextView date=(TextView)row.findViewById(R.id.date);

      ImageView teamoneimg = (ImageView) row.findViewById(R.id.teamOneImg);
      ImageView teamtwoimg = (ImageView) row.findViewById(R.id.teamTwoImg);


      Fixture f=data.get(position);

      teamone.setText(f.getTeamOne());
      teamtwo.setText(f.getTeamTwo());
      vs.setText("Vs");
      venue.setText(f.getVenue());
      date.setText(f.getDateInt());


      if(teamone.getText().toString()=="Bangladesh")
      {
          teamoneimg.setImageResource(R.drawable.fb);
      }
      else
      {
          teamoneimg.setImageResource(R.drawable.ic_launcher);
          teamtwoimg.setImageResource(R.drawable.ic_launcher);
      }
    }
    return row;

}



}

Xml files:

main.xml `

<ListView
    android:id="@+id/list"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" >
</ListView>

</LinearLayout>`

fixture.xml

 <LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:layout_marginLeft="18dp"
    android:layout_marginTop="27dp"
    android:orientation="vertical"

     >

    <LinearLayout
       android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="2"
        android:orientation="horizontal" >
   <!-- first team and name -->

    <LinearLayout

        android:layout_height="match_parent"
        android:layout_weight="2"
        android:orientation="vertical" >

        <ImageView
            android:id="@+id/teamOneImg"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/abc_ab_bottom_solid_dark_holo" />

        <TextView
            android:id="@+id/teamOneName"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="15dp"
            android:text="team 1" />

    </LinearLayout>

    <!-- vs  -->

     <LinearLayout

        android:layout_height="match_parent"
        android:orientation="vertical"
         android:layout_weight="1" >



        <TextView
            android:id="@+id/vs"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Vs" 
            android:layout_marginLeft="5dp"
            android:layout_marginRight="5dp"
            android:paddingTop="15dp"
            />

    </LinearLayout>

    <!-- second team and name -->

      <LinearLayout

        android:layout_height="match_parent"
        android:orientation="vertical"
         android:layout_weight="2" >

        <ImageView
            android:id="@+id/teamTwoImg"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/abc_ab_bottom_solid_dark_holo" />

        <TextView
            android:id="@+id/teamTwoName"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="15dp"
            android:text="Team two" />

    </LinearLayout>

       <!-- venue and date  -->

      <LinearLayout

        android:layout_height="match_parent"
        android:orientation="vertical"
         android:layout_weight="2" >
     <TextView
            android:id="@+id/venue"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Venue" />


        <TextView
            android:id="@+id/date"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="15dp"
            android:text="Date and time" />

    </LinearLayout>
    </LinearLayout>
</LinearLayout>

I have check the database class it has no problem .I think the problem is with the adapter class But i fail to identify it .Please help me out to fix it .